Develop appropriate control charts and determine whether there is any cause for concern in the…

Sampling 4 pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24 hours has produced the following results:

Hour

x

R

Hour

x

R

1

3.25"

.71"

13

3.11"

.85"

2

3.10

1.18

14

2.83

1.31

3

322

1.43

15

3.12

1.06

4

3.39

1.26

16

2.84

.50

5

3.07

1.17

17

2.86

1.43

6

2.86

.32

18

2.74

1.29

7

3.05

.53

19

3.41

1.61

8

2.65

1.13

20

2.89

1.09

9

3.02

.71

21

2.65

1.08

10

2.85

1.33

22

3.28

.46

11

2.83

1.17

23

2.94

1.58

12

2.97

.40

24

2.64

.97

Develop appropriate control charts and determine whether there is any cause for concern in the cutting process. Plot the information and look for patterns.